Hose clamp



Feb, 5 9 M24, 11482564 N. lsAcHsoN l HOSE CLAMP Filed F'eb. 113. 1923 Mpman Isaak sam,

Isacnson, or ALBION, In s osn citarne.

Application filed February 13, 1923. Serial No. 618,653.

To all whom z't 'may concern:

Be it known that I, NORMAN IsAcHsoN, a citizenof the United States, and resident of `Albion, in the county of Cassia and State of Idaho, have invented certain new and useful Improvements in Hose Clamps, of which the following isa specification.

My present invention relates to improvements in pipe clamps, and relates more particularly to clamps of the hose pipe type designed to encircle the exterior of the pipe and clamp the same upon the exterior surface of a metal sleeve, ferrule, or analogous part.

The invention aims to provide a clamp which will produce an uninterrupted binding or clamping effect upon the exterior surface of the pipe throughout its entire circumference and this without the presence of any part which will dig into the surface ofy the pipe or which will cause it to wrinkle up when it is of flexible material; and to so construct the clamp that it will contract evenly and equally at every point upon its circumference.

The invention further aims to provide a construction in which such yuninterrupted clamping or binding effect will be brought to bear against a restricted part of the pipe while at the same time, ample strength is provided.

With these and other objects in view, the invention includes the novel features of construction and arrangement and combination of parts hereinafter described and particularly defined by the appended claims.

In order that my invention may be better understood, I have appended hereto illustrative drawings in which Figure l is a sectional view of a pipe in place upon a sleeve or ferrule and confined in position by my improved clamp.

Fi 2 is a perspective view of the clamp detac ed.

Fig. 3 is a similar view of a modification.

Figs. 4, 5 and 6, lare views of modified vforms of rings.

Fig. 7 is a detail of the detachable hinge of Fig. 3.

While I have shown my improved clamp as a hose clamp, it will be understood that I do not limit myself to this specific use.

the ferrule of an ordinary hose coupling, or the nipple orpipe part used in the water circulating system'of a motor vehicle engine, or any other analogous part.

My improved clamp comprises a pair of substantially semi-circular sections 3 and 4 (preferably of sheet metal) adapted to embrace the pipe, and permanently hinged toether atl one end, preferably by formmg the sections with staggered integral tongues 31 and 4a which are bent to form eyes or openings to receive a hinge pin 10. The free ends of these sections are'bent outwardly as indicated at 3b and 4b and then doubled back as indicated at 3 and 4c, the ends of the doubled back portions being notched as indicated at c for a purpose which will hereinafter appear. n The sections are provided with centrally located internal grooves 3d and 4d, which, when the members are made of sheet metal, may be formed by swaging or stamping,

which grooves are designed to receive and lhold a clamping, constricting, or pressure Vsheet metal sections are placed in position with the wire aligned with and resting in the grooves. The free ends of the sections are then drawn together by means of the usual screw bolt 6 and nut 6a passing through aligning openings in the doubled endportions, which causes the split ring to contract and press evenly against the hose at all points on the circumference thereof, and owing to the ring being of relatively small round wire, the pressure is applied to the pipe at a narrow or constricted area and a very firm binding action secured which results in an absolutely tight joint between the pipe and coupling member.

At the same time by the use of the metal clamping sections, I secure ring contracting parts having ample strength, both for the clamping action and to cooperate with the bolt and nut.

Preferably the inner surface of the clamp lill@ the sections are desi edto en ge the ring and aid in contracting it at t e space between the section ends, or in other words, are adapted to bridge the gap, and they not only serve to aid in constricting or contracting the wire ring, but also serve to brace the portions which receive the thrust of the bolt head and nut.

In some instances, I find it desirable to use two wire rings as illustrated in Fig. 4, in which event the clamping sections are made wider and provided with two sets of grooves, as shown.

When the clampis designed for use in situations such that it cannot be slipped over the end of the hose, the hinge may bye made detachable, as shown in Figs. 3 and 7, by forming one section with hookshaped portions 3x designed to engage corresponding eyes or openings in the other section. The Wire ring may be made of two overlapping parts, or in other words,

divided in two places, or it may be provided witha notched or weakened portion 5e, Fig. 5 so 'that when the ends of the ring are pulled far enough apart to go around the hose, the binding action will be confined to the weakened part and this will enable the ring to be readily restored to its original circular shape around the hose and prevent distortion of the ring. Instead of using a ring which is made of wire round in cross section, I may use one of non-circular form,

such as indicated at 5f, Fig. 6, in which event the channel in the clamp would preferably be correspondingly modified.

It will be understood that by the use of the term hose I mean to include any form of (pipe upon which suoli a clamp can be use By the use of a contractable annular wire ring and encircling sheet metal clamp shaped as shown, it will be seen that I provide a relatively narrow contractable meinber or constricting device, which presses upon the hose in a manner to secure an effiv cient binding action to prevent leakage,

while all strain is carried by an independent and relatively'wide clamping device, the groove in which serves as meansv for maintaining alignment, or in other words, for holding the ring centrally of the clamping means.

Having thus described my invention, what I claim 1s 1.l A clamp of the character described, comprising a divided wire ring havin slidably contacting overlapping ends, and a divided clamping band havin a shallow internal groove to receive sai ring, and

means for contracting said band upon said rlng.

2. A clamp of .the character described comprising a divided wire ring-having tapered slidably contacting overlapping ends, and a dividedV clamping band having a shallow internal annular groove to receive said ring, and means for contracting .the band upon the ring.

3. A clamp of ythe character described,

comprising a divided wire ring having slidably contacting overlapping ends, and a divided clamping handhaving a shallow interna] groove to receive Said ring, and means for contracting said band upon said ring, said band having the portions lying on each side of the groove flared outwardly.

4. A clamp of the character described, comprising a split wire ring having slidably contacting overlapping ends, and al clamp- -ing means cooperating therewith, comprising a pair of relatively wide sections of substantially semi-circular shape having in- V forming struts adapted to bear on the por-i tion ot the wire ring between said wings.

6. A clamp of the character described, comprising -a split wire ring having overlapping ends, and a clamping means cooperating therewith, comprising a pai-r of relatively wide sections o substantially semicircular Yshape having internal shallow wire receiving grooves, said sections having two of their ends pivotally connected together,

the-other ends being provided with out` wardly extended portions' or wings, said wings having inwardly extending portions extending at an angle to the win s, and formmg struts adapted to bear on t e portion of the wire ring between said wings, said struts having notches to receive said ring.

In testimony whereof, I affix my Signature.

NORMAN IS-AGHSON. 

